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Track down UnknownHostException on non-existent server

Richard Sochor1
Richard Sochor September 22, 2016

I upgraded Confluence to the latest version and now on startup I get the error logged below. Confluence will come up in the browser but only in a 'text' mode.

The exception UnknownHostException: is raised for a server that no longer exists and didn't exist when the upgrade was done. But now it throws the following. I can't find any reference to the server in configurations so wondering how to resolve. Any ideas appreciated.

 

2016-09-22 07:49:01,070 ERROR [AtlassianEvent::CustomizableThreadFactory-2] [renderer.internal.http.HttpClientFetcher] fetch Unable to retrieve response
java.net.UnknownHostException: ssiroa031
 at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
 at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
 at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
 at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
 at java.net.InetAddress.getAllByName(InetAddress.java:1192)
 at java.net.InetAddress.getAllByName(InetAddress.java:1126)
 at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)
 at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:259)
 at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:159)
 at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:304)
 at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611)
 at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
 at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:882)
 at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
 at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:107)
 at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)
 at com.atlassian.gadgets.renderer.internal.http.HttpClientFetcher.fetch(HttpClientFetcher.java:97)
 at org.apache.shindig.gadgets.DefaultGadgetSpecFactory.fetchObjectAndCache(DefaultGadgetSpecFactory.java:126)
 at org.apache.shindig.gadgets.DefaultGadgetSpecFactory.getGadgetSpec(DefaultGadgetSpecFactory.java:91)
 at com.atlassian.gadgets.renderer.internal.local.LocalGadgetSpecFactory.getGadgetSpec(LocalGadgetSpecFactory.java:61)
 at com.atlassian.gadgets.renderer.internal.local.LocalGadgetSpecFactory.getGadgetSpec(LocalGadgetSpecFactory.java:48)
 at com.atlassian.gadgets.renderer.internal.GadgetSpecFactoryImpl.getGadgetSpec(GadgetSpecFactoryImpl.java:128)
 at com.atlassian.gadgets.renderer.internal.GadgetSpecFactoryImpl.getGadgetSpec(GadgetSpecFactoryImpl.java:83)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
 at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:56)
 at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:60)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
 at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
 at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
 at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:70)
 at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:53)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
 at org.eclipse.gemini.blueprint.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:57)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
 at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
 at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
 at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
 at com.sun.proxy.$Proxy1837.getGadgetSpec(Unknown Source)
 at com.atlassian.confluence.plugins.gadgets.metadata.GadgetsMacroMetadataProvider.getGadgetSpecs(GadgetsMacroMetadataProvider.java:208)
 at com.atlassian.confluence.plugins.gadgets.metadata.GadgetsMacroMetadataProvider.getMacroMetadata(GadgetsMacroMetadataProvider.java:95)
 at com.atlassian.confluence.plugins.gadgets.metadata.MetadataCacheLoader.load(MetadataCacheLoader.java:41)
 at com.atlassian.confluence.plugins.gadgets.metadata.MetadataCacheLoader.load(MetadataCacheLoader.java:20)
 at com.atlassian.cache.ehcache.LoadingCache.getFromLoader(LoadingCache.java:145)
 at com.atlassian.cache.ehcache.LoadingCache.loadValueAndReleaseLock(LoadingCache.java:100)
 at com.atlassian.cache.ehcache.LoadingCache.get(LoadingCache.java:76)
 at com.atlassian.cache.ehcache.DelegatingCache.get(DelegatingCache.java:96)
 at com.atlassian.confluence.cache.ehcache.DefaultConfluenceEhCache.get(DefaultConfluenceEhCache.java:41)
 at com.atlassian.confluence.cache.ConfluenceMonitoringCache.get(ConfluenceMonitoringCache.java:44)
 at com.atlassian.confluence.plugins.gadgets.metadata.CachingGadgetsMacroMetadataProvider.getData(CachingGadgetsMacroMetadataProvider.java:142)
 at com.atlassian.confluence.macro.browser.DefaultMacroMetadataManager.buildMacroMetadata(DefaultMacroMetadataManager.java:144)
 at com.atlassian.confluence.macro.browser.DefaultMacroMetadataManager.onPluginFrameworkStartedEvent(DefaultMacroMetadataManager.java:72)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:36)
 at com.atlassian.confluence.event.ConfluenceListenerHandlersConfiguration$TimingListenerHandler$1$1.invoke(ConfluenceListenerHandlersConfiguration.java:69)
 at com.atlassian.confluence.event.ConfluenceEventDispatcher$VCacheRequestContextRunnableFactory.lambda$null$0(ConfluenceEventDispatcher.java:76)
 at com.atlassian.confluence.vcache.VCacheRequestContextOperations.lambda$doInRequestContext$0(VCacheRequestContextOperations.java:48)
 at com.atlassian.confluence.impl.vcache.VCacheRequestContextManager.doInRequestContext(VCacheRequestContextManager.java:82)
 at com.atlassian.confluence.impl.vcache.VCacheRequestContextManager.doInRequestContext(VCacheRequestContextManager.java:72)
 at com.atlassian.confluence.vcache.VCacheRequestContextOperations.doInRequestContext(VCacheRequestContextOperations.java:47)
 at com.atlassian.confluence.event.ConfluenceEventDispatcher$VCacheRequestContextRunnableFactory.lambda$getRunnable$1(ConfluenceEventDispatcher.java:76)
 at com.atlassian.confluence.event.ConfluenceEventDispatcher.lambda$null$0(ConfluenceEventDispatcher.java:56)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
 at java.lang.Thread.run(Thread.java:745)
2016-09-22 07:49:01,075 WARN [AtlassianEvent::CustomizableThreadFactory-2] [gadgets.renderer.internal.GadgetSpecFactoryImpl] getGadgetSpec Error occurred while retrieving gadget spec for http://ssiroa031/jira/rest/gadgets/1.0/g/com.atlassian.jira.gadgets:pie-chart-gadget/gadgets/piechart-gadget.xml
2016-09-22 07:49:01,075 WARN [AtlassianEvent::CustomizableThreadFactory-2] [plugins.gadgets.metadata.GadgetsMacroMetadataProvider] getGadgetSpecs Unable to parse gadget spec [ http://ssiroa031/jira/rest/gadgets/1.0/g/com.atlassian.jira.gadgets:pie-chart-gadget/gadgets/piechart-gadget.xml ]: org.apache.shindig.gadgets.GadgetException: Unable to retrieve gadget xml. HTTP error 500
2016-09-22 07:49:01,086 WARN [AtlassianEvent::CustomizableThreadFactory-2] [gadgets.renderer.internal.GadgetSpecFactoryImpl] getGadgetSpec Error occurred while retrieving gadget spec for http://projects/jira/rest/gadgets/1.0/g/com.pyxis.greenhopper.jira:greenhopper-gadget-project-dashboard/gadgets/greenhopper-project-dashboard.xml
2016-09-22 07:49:01,087 WARN [AtlassianEvent::CustomizableThreadFactory-2] [plugins.gadgets.metadata.GadgetsMacroMetadataProvider] getGadgetSpecs Unable to parse gadget spec [ http://projects/jira/rest/gadgets/1.0/g/com.pyxis.greenhopper.jira:greenhopper-gadget-project-dashboard/gadgets/greenhopper-project-dashboard.xml ]: org.apache.shindig.gadgets.GadgetException: Unable to retrieve gadget xml. HTTP error 404

 

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Richard Sochor1
Richard Sochor September 22, 2016

Thanks for the quick response. I have already tried that without success. The server does not exist anymore thus it won't resolve via DNS. I have tried modifying the host file and pointing to both localhost and the production server without success.

Removing or correcting would seem best but I cannot find any reference in any configuration file in either Confluence or JIRA. I have grepped the entire Atlassian folder without success.

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noamdah
noamdah
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September 22, 2016

This happend to me when migrating a vm server, changing the base url and removing all the irrelevant lines in the etc hosts file of the vm worked for me. If you have taken these steps but still facing the issue you can open a support ticket at Atlassian Support.

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noamdah
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September 22, 2016

Check out this link and this link.

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